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我用容斥过了……但自己出的数据跑不出来……汗

Posted by alpc52 at 2009-10-22 21:12:57 on Problem 3695 
附数据：
20 100000
1 1 20 20
2 2 21 21
3 3 22 22
......
20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
......

PS:我的另一个容斥能过这个数据，但pku和hdu都超时……瀑布汗……
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